Feature:Made of good quality material that is durable, wear resistant, not easy to break, and has a long service time.Can protect your knuckles or fingers from pinching when changing tires and motorcycle inner tubes.Easy to install. Guides the inner tube valve stem right through the rim hole for you. Specification:Material: MetalColor: Black, Brass ToneSize: 13x12x80mm / 0.51"x0.42"x3.15"(L*W*H)Thread Size: M5x0.7Installation:Remove the inner tube valve core using the tip of the Valve Fishing Tool or use the bonus valve stem cap.Slide the inner tube valve stem nut over the threaded brass head of the tool and onto the wire.Push the threaded brass head through the rim hole.Thread the brass tool head into the valve stem.Push the valve stem back inside the tire and towards the rim hole.